ninja: Entering directory `out/gn'
[1/8] COPY ../../libcxx/include/stdexcept include/c++/v1/stdexcept
[2/8] COPY ../../libcxx/include/__system_error/error_code.h include/c++/v1/__system_error/error_code.h
[3/8] COPY ../../libcxx/include/__system_error/error_condition.h include/c++/v1/__system_error/error_condition.h
[4/8] COPY ../../libcxx/include/__system_error/error_category.h include/c++/v1/__system_error/error_category.h
[5/8] COPY ../../libcxx/include/__system_error/system_error.h include/c++/v1/__system_error/system_error.h
[6/8] COPY ../../libcxx/include/__exception/nested_exception.h include/c++/v1/__exception/nested_exception.h
[7/8] COPY ../../libcxx/include/__exception/operations.h include/c++/v1/__exception/operations.h
[8/8] COPY ../../libcxx/include/__exception/exception.h include/c++/v1/__exception/exception.h